2026-09-21 · KeXinMaterials 编辑团队
工程塑料箱工业采购指南:重型 B2B 存储 (2026)
工程塑料箱 — ABS、玻纤增强 PP、尼龙混合 — 是工业存储的主力。它们结合了跌落耐性、耐化学性和成本效益。这是 2026 B2B 采购指南。
为什么工程塑料箱是独立 B2B 类别
Engineering plastic cases fill the gap between consumer-grade plastic and metal / aluminium industrial cases. They cost less than metal and outperform consumer plastic for industrial use.
Engineering plastic cases: ABS, glass-filled PP, PC (polycarbonate), nylon blends. Cost USD 30-120 per case (mid-size). Temperature range -40°C to +120°C depending on material. Drop resistance 2-3m onto concrete.
Consumer plastic cases (PP copolymer): cost USD 10-25. Temperature -20°C to +60°C. Drop resistance 1-1.5m. Used for casual / light-duty applications.
Metal / aluminium industrial cases: cost USD 80-300. Temperature -40°C to +150°C. Drop resistance 3-5m. Used for high-spec defence / aerospace. Heavier and more expensive.
For B2B buyers, engineering plastic cases are the right balance for most industrial applications (workshop, field service, automotive, light industrial).
材料选择:PP vs ABS vs PC vs 尼龙
Five materials dominate the engineering plastic case market. Each suits specific applications.
PP copolymer (Polypropylene): workhorse material, USD 1.80-2.50/kg. Good impact, low-temp -20°C, food-safe variants. Used for general industrial cases.
ABS (Acrylonitrile Butadiene Styrene): stiffer, higher gloss, USD 2.20-3.00/kg. Low-temp -10°C. Used for premium tool cases with high-aesthetic requirements.
Glass-filled PP (10-30% glass): premium stiffness, USD 2.80-4.00/kg. Low-temp -30°C. Used for heavy-duty industrial cases with high load capacity.
PC (Polycarbonate): high-impact clarity, USD 3.50-5.00/kg. Low-temp -40°C. Used for transparent / clear cases and aerospace applications.
Nylon (PA6, PA66): extreme stiffness, USD 3.50-6.00/kg. Low-temp -40°C to high-temp +120°C. Used for defence, aerospace, automotive under-hood applications.
At KeXinMaterials we run PP standard, ABS premium, glass-filled PP heavy-duty, PC and nylon blends on request. 60+ injection machines covering all engineering plastics.
承重与壁厚
Engineering plastic case load capacity depends on wall thickness, corner reinforcement, and material.
Wall thickness: 2.5-3mm standard industrial, 3-4mm heavy-duty, 4-6mm defence / aerospace. Thicker walls increase load capacity and impact resistance.
Corner ribs increase drop resistance 30-50%. Critical for tool cases that will be stacked or dropped.
Hinge design: integrated plastic hinge (50,000+ cycles), piano hinge (100,000+ cycles), metal piano hinge (premium 200,000+ cycles).
Latch design: single toggle, double-latch with key lock, push-button quick release, TSA lock for international travel. Double-latch with key lock is the industrial standard.
Load capacity: 30-50 kg standard industrial, 50-80 kg heavy-duty, 80+ kg defence / aerospace (with glass-filled PP or nylon).
工程塑料箱防护等级
Most engineering plastic cases are IP54 (splash) or IP65 (low-pressure water jet). Higher ratings available with proper sealing.
IP54: protected against dust ingress (not dust-tight) and splashing water. Standard for indoor industrial use.
IP65: dust-tight + low-pressure water jets (12.5mm nozzle, 30 kPa). Required for outdoor / workshop / construction.
IP67: dust-tight + temporary immersion (1m / 30 min). Available on engineering plastic cases with O-ring seal design. Common on heavy-duty SKUs.
For B2B buyers, IP54 covers 70% of engineering plastic case use. IP65 for outdoor / heavy-duty. IP67 for specific applications.
模块化内胆:托盘、分隔板、泡沫
Engineering plastic cases use three interior systems. Match system to programme requirements.
Removable trays: most common. Buyer can rearrange tray layout for different tool sets. Standard in 70% of engineering plastic cases.
Fixed dividers: built into the case at moulding stage. Cannot be rearranged. Used when tool set is stable.
CNC foam inserts: high-end option for specific tool sets (Snap-on, OEM tool kit programmes). Foam cut to match exact tool geometry. Cost USD 50-200 per cavity.
For B2B procurement, removable trays cover most industrial applications. CNC foam for OEM tool kit assembly (1,000+ piece annual programmes).
起订量与交期
Engineering plastic cases fall into three pricing tiers. Match tier to programme size.
Tier 1 stock industrial engineering: MOQ 50-100 cases, USD 30-90/unit (depending on material), 7-15 days production. Standard SKU range.
Tier 2 custom OEM engineering: MOQ 100-500 cases, USD 50-130/unit (case + customisation), 30-45 days production. Custom colour, divider, foam.
Tier 3 new mould engineering: MOQ 1,000+ cases amortised over 12-24 months, USD 35-110/unit post-amortisation, 60-90 days mould + 30-45 days production.
为什么选择 KeXinMaterials 工程塑料箱
KeXinMaterials operates 60+ injection machines in a 13,000 m² facility since 2014. PP, ABS, glass-filled PP, PC, nylon blends available. 200+ active SKUs.
Stock engineering plastic case SKUs: 12 sizes from 12-inch compact to 32-inch expedition. PP standard, ABS premium, glass-filled PP heavy-duty.
Material options: PP / ABS / glass-filled PP / PC / nylon blends. Anti-static variants for electronics. Food-safe variants for pharmaceutical.
Customisation: Pantone / RAL colour, CNC foam inserts, latch upgrade (TSA lock, key lock, push-button), hinge upgrade (piano, metal).
Certifications: ISO 9001:2015, CE / RoHS / REACH, FDA compatibility on request, MIL-STD-810G drop test on heavy-duty SKUs.
Trade terms: EXW Shenzhen / FOB Shenzhen / FOB Ningbo. No DDP, no EU warehouse, no US warehouse. Every shipment direct from our 13,000 m² Guangdong facility.
核心要点
- 工程塑料 = PP / ABS / 玻纤增强 PP / PC / 尼龙 — 工业用途
- 玻纤增强 PP 用于重型(50-80kg 承重);尼龙用于军用 / 航天(80+ kg)
- IP54 标准工业 / IP65 户外 / IP67 专业应用
- 50-100 件起订量现货 / 100-500 件定制 OEM / 1,000+ 件新模具
- 壁厚 2.5-6mm + 角部加强筋 + 钢琴铰链用于重型
常见问题
工程塑料箱最好的材料是什么?
PP 共聚物:一般工业主力,USD 1.80-2.50/kg。ABS:高美学高级,USD 2.20-3.00/kg。玻纤增强 PP(10-30% 玻璃):高负载重型,USD 2.80-4.00/kg。PC:高抗冲击透明,USD 3.50-5.00/kg。尼龙(PA6、PA66):用于军用 / 航天的极刚度,USD 3.50-6.00/kg。KeXinMaterials 全部 5 种都运行。选择取决于负载、温度、成本。
工程塑料箱的承重是多少?
标准工业:30-50kg。重型:50-80kg。军用/航天(玻纤增强 PP 或尼龙):80+kg。承重取决于壁厚(2.5-6mm)、角部加强(角部加强筋使跌落抗性提升 30-50%)、铰链设计(集成塑料 50,000+ 循环、钢琴铰链 100,000+ 循环)、锁扣设计。样品阶段用应力测试证书验证承重。
工程塑料箱应该有什么防护等级?
IP54 标准用于室内工业(防尘 + 防溅)。IP65 用于户外/车间/建筑(防尘 + 低压水柱)。IP67 可用于专业应用(防尘 + 1m/30 min 临时浸没)。大多数 B2B 工程塑料箱是 IP54 或 IP65。
工程塑料箱的起订量是多少?
Tier 1 现货:50-100 箱起订量,USD 30-90/箱,7-15 天生产。Tier 2 定制 OEM:100-500 箱起订量,USD 50-130/箱,30-45 天生产。Tier 3 新模具:1,000+ 箱 12-24 个月分摊,USD 35-110/箱 分摊后,60-90 天模具 + 30-45 天生产。
箱子的 PP 和 ABS 有什么区别?
PP(聚丙烯)是主力 — USD 1.80-2.50/kg,低温 -20°C,食品级变体。ABS 更硬、更高光泽,USD 2.20-3.00/kg,低温 -10°C。PP 用于一般工业;ABS 用于高美学高级要求。PP 用于寒冷环境;ABS 用于室温高级外观。
工程塑料与金属箱如何比较?
工程塑料箱 USD 30-120/箱 vs 金属 USD 80-300/箱。塑料温度范围 -40 至 +120°C vs 金属 -40 至 +150°C。塑料跌落耐性 2-3m vs 金属 3-5m。塑料更轻(运输成本更低)、更容易成型复杂几何、更容易配色。金属更重、更抗冲击、更高级感。对于大多数 B2B 应用,工程塑料是正确平衡。金属保留用于高冲击或极端环境。